Electric vibrator



Dec. l5, 1936. P. o. DERRINGER y2,064,418

` ELECTRIC VIBRATOR Filed Aug. 20. 1935 @bea/bzw" Patented Dec. 15, 1936 UNITED sTATEs PATENT OFFICE ELECTRIC VIBRATOR Percy O. Dei-ringer, St. Louis, Mo., assigner to Knapp-Monarch Company, St. Louis, Mo.. a y corporation of Missouri ApplicationAugust 20, 1935, Serial No. 36,991

3 Claims. (Cl. 12S-52) An object of my invention is to provide an electric vibrator of very simple construction, yet which operates eiiiciently for vibrating various vibration applicators, which can be applied to 5 the human body forthe purpose of promoting health.

A further object is to provide a magnetic type of vibrator which operates eiciently on alternating current without any contacts or commutators to cause mechanical trouble.

A further object is to provide a magnetic vibrator having a single stamping, which servesas an electromagnet support, armature, magnetic f circuit transmission means and applicator support, this single stamping being itself supported within a casing, so that the electromagnet is thereby supported without any independentconnection of its own to the casing.

Still a further object is to provide a U-shaped stamping with an electrcmagnet secured to one arm thereof and projecting toward the other one, and the other one thereby acting as an armature, a projecting stud being connected with the armature and-arranged for interchangeable connection of various Vibration applicators thereto.

With these and other objects in view, my invention consists in the construction, arrangement and combination of the various parts of my electric-vibrator, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawing, In which:

Figure 1 is a perspective view of an electric vibrator embodying my invention.

Figure 2 is an enlarged, sectional View on the line 2 2 of Figure 1.

Figure 3 is an enlarged, sectional view cn the line 3 3 of-Figure 1; and

Figure 4 is a perspective View of a stamping o of the invention, which serves several purposes,

which will hereinafter appear.

On the accompanying drawing, I have used the reference character A to indicate generally a casing, and B a handle therefor. The casing A com- 45 prises a dish-shaped bottom part I0, and a somewhat similarly shaped upper'part I2.

The parts III and I2 telescope together and the handle B is secured to the casing by a ferrule I4 having attaching feet I6. 'Ihese feet 50 may be secured as by rivets I8 to the casing part I I).

The vibrator mechanism comprises a stamping C, an electromagnet E, and an applicator. support F.

55 On the drawing, I have shown a knob top type applicator G and a vacuum cup type H, which are interchangeably connected with the support F by means of screw-threaded studs 20 extending from the applicators and coactible with a threaded socket 22 of the support F.

The stamping C is U-shaped in end elevation as shown in Figure 2; one arm thereof being indicated at 24 and provided with a pair of perforated extensions 26 adapted to serve as supports for the stamping C. l0

Bolts 28 extend ythrough the' perforations of the extensions 26 and through perforations in the casing parts I0 and I2 for holding the parts assembled. These bolts are provided with up-set anges 30 and nuts 32 for retaining the casing 15 parts relative to each other, and the stamping C relative to the casing.

'I'he other arm of the stamping C is indicated at 34 and it has armature extensions 36 adapted for increasing the magnetic pull of the solenoid E 20 on the arm 34, the arm acting as an armature.

Secured to the arm 24 as by a screw 38 is an electro magnet core 40. It projects toward the armature 34 and has thereon a winding 42.

It is obvious that energization of the winding 42 will magnetize the core 40 for attracting the armature 34.

The vibrator is designed specifically for alternating current, so that the successive alternations of current will cause successive increases in the magnetic strength of the core 40, thus vibrating the armature 34 against the inherent tendency of the armature to remain in the position of Figure 2, in which position it is originally stamped.

The lower end of the vibration applicator support F is shouldered as shown in Figure 3 to extend through a perforation 44 of the armature 31|.r The support F is then riveted as indicated at 46 to retain it in position, the perfora- 40 tion 44 being other than round so that when the support F is riveted in position, it can not be loosened and rotated by the vibration of the device.

The stamping C may be of brass or other 5 resilient material, although I preferably form it of steel or the like, so that it will provide a magnetic path from the lower end of the core to the armature 34 and the support F. If it is made of brass or the like, then the electromagnet will cause successive attractions of the support F, which would necessarily have to be of magnetic material, but not as eiiiciently as when the stamping is made of steel or the like,

thus providing a magnetic path so as to minimize the air gap between the armature 34 and the upper end of the core 40. This gap is made as small as possible Without making it so small, however, that the riveted end 46 of the support F will rattle against the core when the electro magnet E is energized. p

For the Winding 42, I provide terminals 48, With which asupply cord 5G may be connected,

i the cord preferably extending through a bore 52 of the handle B and the usual current supply connector (not shown) being provided on the outer end, of the cord 5U.

Various applicators, such as a knob G of wood or the like or a vacuumcup H, formed of rubber or other resilient material may be provided, and these are quickly interchangeable relative to the support F.

In operation, the applicators are merely held against the face or other part of the body to impart vibrations thereto.

By providing a magnetic type of vibrator as disclosed, maximum vibration energy can be imparted to the user without the use of electric motors or other means to operate vibrating mechanisms.

I am thus able to provide a very simple vibrator and this is especially true by making the single stamping C serve as a support for the electro magnet and for the applicator support, the stamping then being secured within the casing, and thereby supported by the casing, Without other parts or securing means being necessary for the electromagnet and the support F.

'I'he parts can be inexpensively manufactured and easily assembled in a minimum of time, thus making it possible to produce a very inexpensive and eicient vibrator.

Some changes may be made in the arrangement and construction of the various parts of my electric vibrator without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims, any modiiied forms of structure or use of mechanical equivalents, which may be reasonably included within their scope.

I claim as my invention: p

1. In an electric vibrator, a single supporting member of magnetic metal comprising a stamping of 'C-shape having diverging arms on. the terminal ends of the arms of the supporting member, a, casing, the diverging arms on one terminal arm of the supporting member being secured, at their outer ends thereto, an electromagnet supported by said last mentioned terminal end and an applicator secured to the other terminal end of said supporting member, said last terminal end being adjacent the portion of said electromagnet opposite the supported end thereof.

2. In an electric vibrator, a single supporting member of magnetic metal comprising a stamping of C-shape having diverging arms on the terminal ends of the arms of the supporting member, a. casing, the diverging arms on one terminal arm of the supporting member being secured at their outer ends thereto, an electromagnet supported by said last mentioned terminal end and an applicator secured to the other terminal end of said supporting member, said last terminal end being adjacent the portion of said electromagnet opposite the supported end thereof, the C-shaped portion of said member having a central rib formed therein to stiften said member against excessive vibration.

3. In an electric vibrator, a. casing, anarmature formed of a single piece of sheet metal bent U-shape, one arm thereof having a widened 

